A growing number of teens like Korra are trying to live their "best life", driving a 200 per cent increase in the number of children seeking transgender treatment at Victoria's Royal Children's Hospital.

In the fight against obesity, Singapore is using fat camps to single out young children who are overweight, telling them what to eat and placing them on a strict exercise routine — but experts doubt the approach would work in Australia.

Pregnant women are particularly vulnerable when caught up in an environmental disaster, with the stress hormone cortisol linked to low birth weights and an elevated level of toxins a threat to the developing foetus, write Cynthia Parayiwa and Alison Behie.

Rachael and Jonny Casella lost their daughter Mackenzie to a genetic condition they had no idea existed. Now they're fighting for every Australian couple to have access to free screening before they start a family.